Welcome to our comprehensive guide on built-up roofs, a popular commercial roof type used in many buildings. Whether you are a business owner, property manager, or simply someone interested in learning about different roofing options, this article will provide you with all the information you need to know about built-up roofs. We will cover everything from the basics of what built-up roofs are to their benefits and drawbacks. So, if you're ready to dive into the world of commercial roof types, let's get started!Built-up roofs are a popular choice for commercial buildings due to their durability and resistance to weather elements.
But what exactly are built-up roofs and how are they made? In this article, we will delve into the details of built-up roofs, covering everything from materials used to waterproofing techniques and finding the right roofing contractor. Built-up roofs, also known as BURs, are made up of multiple layers of bitumen and reinforcing fabrics. Bitumen is a sticky, black, and highly viscous liquid or semi-solid form of petroleum. It is used as a binder in the construction of built-up roofs. The bitumen is then combined with reinforcing fabrics, such as fiberglass, polyester, or organic materials like felt or cotton, to create a thick and durable membrane. One of the main advantages of built-up roofs is their long lifespan.
They can last anywhere from 15 to 30 years, making them a cost-effective choice for commercial buildings. They are also known for their resistance to weather elements, including UV rays, rain, wind, and hail. This makes them a reliable option for areas with harsh weather conditions. When it comes to materials used in built-up roofs, there are several options to choose from. One of the most common materials is asphalt, which is a type of bitumen that is derived from crude oil.
Asphalt is known for its flexibility and ability to expand and contract with changing temperatures, making it a suitable choice for built-up roofs. Another material that can be used in built-up roofs is coal tar. Coal tar is a byproduct of coal processing and is often used as a waterproofing agent in roofing materials. It is known for its resistance to water and chemicals, making it a popular choice for industrial and commercial buildings. Cold-applied adhesives are also used in built-up roofs, as they provide a strong and durable bond between the layers of bitumen and fabrics. These adhesives are applied at room temperature, making them a convenient option for installation. When it comes to fabrics, there are various options available, each with its own advantages and disadvantages.
Fiberglass is a popular choice for built-up roofs due to its strength and durability. It is also resistant to fire and insects, making it a safe option for commercial buildings. Polyester is another fabric that can be used in built-up roofs. It is known for its high tensile strength and ability to resist tearing and punctures. However, it is not as durable as fiberglass and may not be suitable for areas with harsh weather conditions. Organic materials, such as felt or cotton, can also be used in built-up roofs.
These materials are often cheaper than fiberglass or polyester, but they may not be as durable. They are also more prone to water damage and may require frequent maintenance. In conclusion, built-up roofs are a reliable and durable option for commercial buildings. They are made up of multiple layers of bitumen and fabrics, providing a strong and waterproof membrane. The combination of materials used can vary, with options like asphalt, coal tar, and cold-applied adhesive for bitumen, and fiberglass, polyester, or organic materials for fabrics.
It is important to consider the advantages and disadvantages of each combination when choosing the right built-up roof for your commercial building. And remember, always hire a reputable and experienced roofing contractor for installation to ensure the longevity and effectiveness of your built-up roof.
Advantages and Disadvantages
Different combinations of bitumen and fabrics have their own pros and cons. We will outline them here to help you make an informed decision for your roofing needs.Waterproofing Techniques for Built-Up Roofs
One of the main benefits of built-up roofs is their superior waterproofing capabilities. In order to ensure a watertight membrane for your roof, there are several techniques that are used in the construction process. The first technique is the use of multiple layers of roofing felt and bitumen.This creates a thick, durable barrier that is able to withstand harsh weather conditions and prevent water from seeping through. Another important technique is the use of gravel or granules on the surface of the roof. This helps to protect the underlying layers from UV rays and provides an extra layer of waterproofing. Lastly, built-up roofs also utilize flashings and sealants to ensure that all joints and corners are properly sealed and waterproofed. These materials are applied at critical points on the roof to prevent any potential leaks.
Finding the Right Local Roofing Contractor
When it comes to finding the right local roofing contractor for your built-up roof, there are a few key factors to consider. Here are some tips to help you make the best decision:- Research and compare multiple contractors: Don't settle for the first contractor you come across.
Take the time to research and compare multiple contractors in your area. Look for reviews, credentials, and examples of their work.
- Ask for referrals: One of the best ways to find a reliable roofing contractor is through word-of-mouth referrals. Ask friends, family, and other business owners for recommendations.
- Check for insurance and licenses: It's important to ensure that the roofing contractor you choose is properly licensed and insured. This will protect you in case of any accidents or damages during the roofing process.
- Get written estimates: Before making a decision, make sure to get written estimates from each contractor you are considering.
This will allow you to compare prices and services offered.
- Communicate clearly: Once you have chosen a contractor, make sure to communicate your expectations and needs clearly. This will help avoid any misunderstandings or mistakes during the roofing process.
Types of Bitumen and Fabrics Used in Built-Up Roofs
When it comes to built-up roofs, one of the key components is the bitumen, which is a type of black viscous material that acts as a waterproofing agent. There are several types of bitumen that can be used in built-up roofs, each with its own unique characteristics and benefits. The most common type of bitumen used in built-up roofs is asphalt, which is a petroleum-based product. It is known for its durability and affordability, making it a popular choice among commercial building owners.Another type of bitumen that is commonly used is coal tar, which is a byproduct of coal processing. While it is slightly more expensive than asphalt, it offers superior waterproofing capabilities and can withstand high temperatures. In addition to bitumen, fabrics are also an important component in built-up roofs. These fabrics are typically made from materials such as fiberglass, polyester, or organic fibers like cotton or jute. They are used to reinforce the layers of bitumen and provide added strength and flexibility to the roof. Fiberglass is a popular choice for built-up roofs due to its high tensile strength and resistance to corrosion.
Polyester, on the other hand, is known for its affordability and ease of installation. Organic fibers like cotton and jute are more environmentally friendly options, but may not be as durable as their synthetic counterparts. Built-up roofs are a popular choice for commercial buildings due to their durability and waterproofing capabilities. By understanding the materials used and the techniques involved, you can make an informed decision for your roofing needs. Remember to always choose a reputable local roofing contractor for the best results.
